How do I change the duty cycle of cFP-PWM-520 module?

[pedroc2]

Hi

     How can I change the duty cycle when a signal is generated by the compact FieldPoint module cFP-PWM-520?, I can control the period, but the ON time of the signal is not user selectable in the MAX channel attribute, only period(ms) is shown.

Thanks for your help.

Regards

 Peter

[Wayne.C]

Peter,

Duty cycle can't be controlled using channel config in MAX.  Can only be controlled by writing a value to the I/O.  See page 7 of this http://www.ni.com/pdf/manuals/323357b.pdf

[pedroc2]

Thanks Wayne, what would be the sintax to be used when writing to the Channel a change on duty cycle?

[Wayne.C]

I don't have a 520 in to test but since the input range is defined  as 0-100%, I would assume that you write an integer in the range of 0 - 100 to the particular PWM ouput you want to change.